package com.iking.housekeeping.util;

import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;
import java.util.Locale;

public class DateUtil {

	/**
	 * 
	 * @param sDate1
	 * @return 当月最后一天
	 */
	@SuppressWarnings("deprecation")
	public static Date getLastDayOfMonth(Date sDate1) {
		Calendar cDay1 = Calendar.getInstance();
		cDay1.setTime(sDate1);
		int lastDay = cDay1.getActualMaximum(Calendar.DAY_OF_MONTH);
		Date lastDate = cDay1.getTime();
		lastDate.setDate(lastDay);
		return lastDate;
	}

	/***
	 * @param sDate
	 *            当月日期
	 * @return 当月大天数
	 */
	public static int getActualMaximum(Date sDate) {
		Calendar cDay1 = Calendar.getInstance();
		cDay1.setTime(sDate);
		return cDay1.getActualMaximum(Calendar.DAY_OF_MONTH);
	}

	/**
	 * 获得指定日期的前一天
	 * 
	 * @param specifiedDay
	 * @return
	 */
	public static Date getDayBefore(Date date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		int day = calendar.get(Calendar.DATE);
		calendar.set(Calendar.DATE, day - 1);
		Date beforeDate = calendar.getTime();
		return beforeDate;
	}

	/**
	 * 获得指定日期的后一天
	 * 
	 * @param specifiedDay
	 * @return
	 */
	public static Date getDayAfter(Date date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		int day = calendar.get(Calendar.DATE);
		calendar.set(Calendar.DATE, day + 1);
		Date afterDate = calendar.getTime();
		return afterDate;
	}

	/**
	 * 获得当天下班时间点18:00
	 * 
	 * @param specifiedDay
	 * @return
	 */
	public static Date getClosingTime(Date date) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		calendar.set(Calendar.HOUR, 18);
		calendar.set(Calendar.MINUTE, 0);
		calendar.set(Calendar.SECOND, 0);
		return calendar.getTime();
	}

	/**
	 * @Description 将日期转换为指定的字符串
	 * @param date
	 * @param formatString
	 * @return
	 */
	public static String getFormatDate(Date date, String formatString) {
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat(formatString);
		return simpleDateFormat.format(date);
	}

	/**
	 * 获取当天的开始时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static java.util.Date getDayBegin() {
		Calendar cal = new GregorianCalendar();
		cal.set(Calendar.HOUR_OF_DAY, 0);
		cal.set(Calendar.MINUTE, 0);
		cal.set(Calendar.SECOND, 0);
		cal.set(Calendar.MILLISECOND, 0);
		return cal.getTime();
	}

	/**
	 * 获取当天的结束时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static java.util.Date getDayEnd() {
		Calendar cal = new GregorianCalendar();
		cal.set(Calendar.HOUR_OF_DAY, 23);
		cal.set(Calendar.MINUTE, 59);
		cal.set(Calendar.SECOND, 59);
		return cal.getTime();
	}

	/**
	 * 获取昨天的开始时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getBeginDayOfYesterday() {
		Calendar cal = new GregorianCalendar();
		cal.setTime(getDayBegin());
		cal.add(Calendar.DAY_OF_MONTH, -1);
		return cal.getTime();
	}

	/**
	 * 获取昨天的结束时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getEndDayOfYesterDay() {
		Calendar cal = new GregorianCalendar();
		cal.setTime(getDayEnd());
		cal.add(Calendar.DAY_OF_MONTH, -1);
		return cal.getTime();
	}

	/**
	 * 获取明天的开始时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getBeginDayOfTomorrow() {
		Calendar cal = new GregorianCalendar();
		cal.setTime(getDayBegin());
		cal.add(Calendar.DAY_OF_MONTH, 1);

		return cal.getTime();
	}

	/**
	 * 获取明天的结束时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getEndDayOfTomorrow() {
		Calendar cal = new GregorianCalendar();
		cal.setTime(getDayEnd());
		cal.add(Calendar.DAY_OF_MONTH, 1);
		return cal.getTime();
	}

	/**
	 * 获取本周的开始时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	@SuppressWarnings("unused")
	public static Date getBeginDayOfWeek() {
		Date date = new Date();
		if (date == null) {
			return null;
		}
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
		if (dayofweek == 1) {
			dayofweek += 7;
		}
		cal.add(Calendar.DATE, 2 - dayofweek);
		return getDayStartTime(cal.getTime());
	}

	/**
	 * 获取本周的结束时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getEndDayOfWeek() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getBeginDayOfWeek());
		cal.add(Calendar.DAY_OF_WEEK, 6);
		Date weekEndSta = cal.getTime();
		return getDayEndTime(weekEndSta);
	}

	/**
	 * 获取本月的开始时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getBeginDayOfMonth() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(getNowYear(), getNowMonth() - 1, 1);
		return getDayStartTime(calendar.getTime());
	}

	public static String getBeforeFirstMonthdate() throws Exception {
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
		Calendar calendar = Calendar.getInstance();
		calendar.add(Calendar.MONTH, -1);
		calendar.set(Calendar.DAY_OF_MONTH, 1);
		return format.format(calendar.getTime());
	}

	public static String getBeforeLastMonthdate() throws Exception {
		SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
		Calendar calendar = Calendar.getInstance();
		int month = calendar.get(Calendar.MONTH);
		calendar.set(Calendar.MONTH, month - 1);
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
		return sf.format(calendar.getTime());
	}

	/**
	 * 获取本月的结束时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getEndDayOfMonth() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(getNowYear(), getNowMonth() - 1, 1);
		int day = calendar.getActualMaximum(5);
		calendar.set(getNowYear(), getNowMonth() - 1, day);
		return getDayEndTime(calendar.getTime());
	}

	/**
	 * 获取本年的开始时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static java.util.Date getBeginDayOfYear() {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.YEAR, getNowYear());
		// cal.set
		cal.set(Calendar.MONTH, Calendar.JANUARY);
		cal.set(Calendar.DATE, 1);

		return getDayStartTime(cal.getTime());
	}

	/**
	 * 获取本年的结束时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static java.util.Date getEndDayOfYear() {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.YEAR, getNowYear());
		cal.set(Calendar.MONTH, Calendar.DECEMBER);
		cal.set(Calendar.DATE, 31);
		return getDayEndTime(cal.getTime());
	}

	/**
	 * 获取某个日期的开始时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Timestamp getDayStartTime(Date d) {
		Calendar calendar = Calendar.getInstance();
		if (null != d)
			calendar.setTime(d);
		calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0,
				0, 0);
		calendar.set(Calendar.MILLISECOND, 0);
		return new Timestamp(calendar.getTimeInMillis());
	}

	/**
	 * 获取某个日期的结束时间
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Timestamp getDayEndTime(Date d) {
		Calendar calendar = Calendar.getInstance();
		if (null != d)
			calendar.setTime(d);
		calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23,
				59, 59);
		calendar.set(Calendar.MILLISECOND, 999);
		return new Timestamp(calendar.getTimeInMillis());
	}

	/**
	 * 获取今年是哪一年
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Integer getNowYear() {
		Date date = new Date();
		GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
		gc.setTime(date);
		return Integer.valueOf(gc.get(1));
	}

	/**
	 * 获取本月是哪一月
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static int getNowMonth() {
		Date date = new Date();
		GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
		gc.setTime(date);
		return gc.get(2) + 1;
	}

	/**
	 * 两个日期相减得到的天数
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static int getDiffDays(Date beginDate, Date endDate) {

		if (beginDate == null || endDate == null) {
			throw new IllegalArgumentException("getDiffDays param is null!");
		}

		long diff = (endDate.getTime() - beginDate.getTime()) / (1000 * 60 * 60 * 24);

		int days = new Long(diff).intValue();

		return days;
	}

	/**
	 * 两个日期相减得到的毫秒数
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static long dateDiff(Date beginDate, Date endDate) {
		long date1ms = beginDate.getTime();
		long date2ms = endDate.getTime();
		return date2ms - date1ms;
	}

	/**
	 * 获取两个日期中的最大日期
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date max(Date beginDate, Date endDate) {
		if (beginDate == null) {
			return endDate;
		}
		if (endDate == null) {
			return beginDate;
		}
		if (beginDate.after(endDate)) {
			return beginDate;
		}
		return endDate;
	}

	/**
	 * 获取两个日期中的最小日期
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date min(Date beginDate, Date endDate) {
		if (beginDate == null) {
			return endDate;
		}
		if (endDate == null) {
			return beginDate;
		}
		if (beginDate.after(endDate)) {
			return endDate;
		}
		return beginDate;
	}

	/**
	 * 返回某月该季度的第一个月
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getFirstSeasonDate(Date date) {
		final int[] SEASON = { 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4 };
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		int sean = SEASON[cal.get(Calendar.MONTH)];
		cal.set(Calendar.MONTH, sean * 3 - 3);
		return cal.getTime();
	}

	/**
	 * 返回某个日期下几天的日期
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getNextDay(Date date, int i) {
		Calendar cal = new GregorianCalendar();
		cal.setTime(date);
		cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
		return cal.getTime();
	}

	/**
	 * 返回某个日期前几天的日期
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static Date getFrontDay(Date date, int i) {
		Calendar cal = new GregorianCalendar();
		cal.setTime(date);
		cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
		return cal.getTime();
	}

	/**
	 * 获取某年某月到某年某月按天的切片日期集合（间隔天数的集合）
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static List<List<Date>> getTimeList(int beginYear, int beginMonth, int endYear, int endMonth, int k) {
		List<List<Date>> list = new ArrayList<List<Date>>();
		if (beginYear == endYear) {
			for (int j = beginMonth; j <= endMonth; j++) {
				list.add(getTimeList(beginYear, j, k));

			}
		} else {
			{
				for (int j = beginMonth; j < 12; j++) {
					list.add(getTimeList(beginYear, j, k));
				}

				for (int i = beginYear + 1; i < endYear; i++) {
					for (int j = 0; j < 12; j++) {
						list.add(getTimeList(i, j, k));
					}
				}
				for (int j = 0; j <= endMonth; j++) {
					list.add(getTimeList(endYear, j, k));
				}
			}
		}
		return list;
	}

	/**
	 * 获取某年某月按天切片日期集合（某个月间隔多少天的日期集合）
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static List<Date> getTimeList(int beginYear, int beginMonth, int k) {
		List<Date> list = new ArrayList<Date>();
		Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
		int max = begincal.getActualMaximum(Calendar.DATE);
		for (int i = 1; i < max; i = i + k) {
			list.add(begincal.getTime());
			begincal.add(Calendar.DATE, k);
		}
		begincal = new GregorianCalendar(beginYear, beginMonth, max);
		list.add(begincal.getTime());
		return list;
	}

	public static String getStringDate(Date date) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		return sdf.format(date);
	}

	/**
	 * @param 把字符串转成时间
	 *            格式为 yyyy-MM-dd HH:mm:ss
	 * @return 返回时间
	 * @throws Exception
	 */
	public static Date toDate(String dateStr) throws Exception {
		Date date = null;
		SimpleDateFormat formater = new SimpleDateFormat();
		formater.applyPattern("yyyy-MM-dd HH:mm:ss");
		date = formater.parse(dateStr);
		return date;
	}

	/**
	 * @param 把字符串转成时间
	 *            格式为 HH:mm:ss
	 * @return 返回时间
	 * @throws Exception
	 */
	public static Date toTime(String dateStr) throws Exception {
		Date date = null;
		SimpleDateFormat formater = new SimpleDateFormat();
		formater.applyPattern("HH:mm:ss");
		date = formater.parse(dateStr);
		return date;
	}

	/**
	 * @Description 将标准的时间格式字符串转换成date类型
	 * @param dateStr
	 * @return
	 */
	public static Date toStandardDate(String dateStr) {
		String str = dateStr.replace("GMT", "").replaceAll("\\(.*\\)", "");
		SimpleDateFormat format = new SimpleDateFormat("EEE MMM dd yyyy hh:mm:ss z", Locale.ENGLISH);
		Date date = null;
		try {
			date = format.parse(str);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return date;
	}

	/**
	 * @param fangkai
	 * @return 返回某一天是星期几
	 */
	public static int dayForWeek(String pTime) throws Exception {
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
		Calendar c = Calendar.getInstance();
		c.setTime(format.parse(pTime));
		int dayForWeek = 0;
		if (c.get(Calendar.DAY_OF_WEEK) == 1) {
			dayForWeek = 7;
		} else {
			dayForWeek = c.get(Calendar.DAY_OF_WEEK) - 1;
		}
		return dayForWeek;
	}

	/**
	 * 返回今天星期几
	 */
	public static int dayForWeek(Date date) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		int dayForWeek = 0;
		if (cal.get(Calendar.DAY_OF_WEEK) == 1) {
			dayForWeek = 7;
		} else {
			dayForWeek = cal.get(Calendar.DAY_OF_WEEK) - 1;
		}
		return dayForWeek;
	}

	/**
	 * 返回昨天星期几
	 */
	public static int getTimeString(Date date) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		if (cal.get(Calendar.DAY_OF_WEEK) - 2 == -1) {
			return 6;
		} else if (cal.get(Calendar.DAY_OF_WEEK) - 2 == 0) {
			return 7;
		} else {
			return cal.get(Calendar.DAY_OF_WEEK) - 2;
		}
	}

	public static Date toDate2(String... strings) {
		Date date = null;
		SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		for (String string : strings) {
			if (string != null || "".equals(string)) {
				try {
					date = formater.parse(string);// 字符串转化成时间格式

				} catch (ParseException e) {// 如果转化失败则返回data

				}
			}
		}

		return date;
	}

	/**
	 * 给当前日期加一天
	 * 
	 * @param fangkai
	 * @return Exception
	 */
	public static String addOneday(String today) {
		SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd");
		try {
			Date d = new Date(f.parse(today).getTime() + 24 * 3600 * 1000);
			return f.format(d);
		} catch (Exception ex) {
			return "输入格式错误";
		}
	}

	/**
	 * 返回之前的十二个月
	 * 
	 * @param 无
	 * @author LC
	 * @return List<String> 当前月的前十二个月的集合不包括本月
	 */
	public static List<String> monthesList() {
		List<String> list = new ArrayList<>();
		SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		Calendar c = Calendar.getInstance();
		Date m = null;
		for (int i = 0; i < 12; i++) {
			if (i == 0) {
				c.setTime(new Date());
			} else {
				c.setTime(m);
			}
			c.add(Calendar.MONTH, -1);
			m = c.getTime();
			String mon = formater.format(m);
			String date = mon.substring(0, 7);
			list.add(date);
		}
		Collections.reverse(list);
		return list;
	}

	/**
	 * 判断当前日期是否是所传的那一天，再返回应该返回的月份
	 * 
	 * @author LC
	 * @param 设置的几号更新
	 * @return
	 */
	@SuppressWarnings("deprecation")
	public static String getBillMonth(int day) {
		String month = new String();
		Date nowdate = new Date();
		Date date = new Date();
		date.setDate(day);
		long dateTime = date.getTime();
		long nowdateTime = nowdate.getTime();
		SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		Calendar c = Calendar.getInstance();
		c.setTime(nowdate);
		if (dateTime > nowdateTime) {
			c.add(Calendar.MONTH, -2);
		} else {
			c.add(Calendar.MONTH, -1);
		}
		Date m = c.getTime();
		String mon = formater.format(m);
		month = mon.substring(0, 7);
		return month;
	}

	/**
	 * 获取当天的23:59:59
	 * @param date
	 * @return
	 */
	public static Date addEndTime(Date date) {
		Date newDate = null;
		SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		String dateTemp = formater.format(date);
		dateTemp = dateTemp.substring(0, 11) + "23:59:59";
		try {
			newDate = toDate(dateTemp);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return newDate;
	}

	/**
	 * 获取当前的00:00:00
	 * @param date
	 * @return
	 */
	public static Date addStartTime(Date date) {
		Date newDate = null;
		SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		String dateTemp = formater.format(date);
		dateTemp = dateTemp.substring(0, 11) + "00:00:00";
		try {
			newDate = toDate(dateTemp);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return newDate;
	}

	/**
	 * 返回上一个月的的开始时间与结束时间
	 * 
	 * @author LC
	 * @return
	 */
	public static List<Date> lastMonth() {
		List<Date> list = new ArrayList<>();
		Calendar c = Calendar.getInstance();
		c.add(Calendar.MONTH, -1);
		int MaxDay = c.getActualMaximum(Calendar.DAY_OF_MONTH);
		c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), MaxDay, 23, 59, 59);
		Date last = c.getTime();
		c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), 1, 0, 0, 0);
		Date begin = c.getTime();

		list.add(0, begin);
		list.add(1, last);
		return list;
	}

	public static void main(String[] args) {
		System.out.println(lastMonth());

	}
}
